Power-transmission device.



T. L. FAWICK.

POWER TRANSMISSION'DEVICE.

APPLICATION FILED 1AN25| |915- Panted 111111511916.

In :le n to 7*, ThomaL.Fawz'c witnessms STAT-ES PATENT. OFFICE Q; Tnet/IAS, nrAWIcK, or'sIoUXrALLs, SOUTH DAKOTA.

rownmrnansivussrolv DEVICE.

peccation of Letters Patent.

Patented Jan. 18, 1916.

Application led January 25, 1915. Serialm 4,320.

To all whom t may concern.' n

Y Be it known that I, THOMAS L. FAwIcK, a citizen-of the United States of America, and a resident of Sioux Falls, Minnehaha county, South Dakota, have invented certain new and useful Improvements in Power-Transmission Devices, of which the following is a specification.

My invention relates to provements in power transmission devices, and the ob]ect of my improvement is to supply intermediate mechanism. between a .driving-shaft and a driven body or bodies I'adapted to permitof either forward or reverse movement of the latter, while permitting the operation of a pulley-shaft simultaneously or when the other driven bodies are not being actuated.

This object I have accomplished by the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawing, in which 1s shown` a horlzontal medial section of the gear casing and of the gearing-'of my improved power ing-shaft extending into said casing and mounted rotatably within two spaced sets of'ball-bearings, and having abevel-pinion 2 secured on its inner end within said casing. The numerals 3 and '4 denote like bevel-gear wheels intermeshed with opposite sides of said pinion in said casing. A rotatable shaft 18 is mounted within said casing as is also another rotatable Shaft 10 alined therewith but having their adjacent ends spaced apart within the casing. VThe shafts 18 and 10 are arranged at right anglesto a driving-shaft 1, and. the bevel-gear wheel 3 is secured upon the inner end of the o longitudinally rwithin said through the hub of the bevel-gear wheel 4,' '55 shaft 10 and is mounted in anti-fric`tion bearings. The bevel-gear 4: is mounted upon the shaft 18 and seated within anti-friction bearings in said casing.v -On the outer end of the shaft 18 islixed a collar 9 having spaced annular flanges between which any suitable shifting device may be movably mounted whereby the shaft 18 may bemoved casing and the latter beingl mounted rotatably upon-said the central hollow of the gear-wheel 3 kwhile the other end extends similarly into the central hollow of the gear-wheel 4, both ends being seated within ball-bearings.

The 'numeral 11 denotes a relatively large gear-wheel always. in mesh. with the -pinion 7 and fixed upon the inner end of a shaft 12- which is seated within a pair of ballbearings in'a tubular part of said casing to eX- tend outward therefrom and has avpinion 13 secured on its outer end. Said casing has integral oriiiced ears or lugs 15, `1,6 and .'17, which, as shown, are arranged on opposite sides of said casing 14e in such a vway as to provide a three-point suspension for the casing, which is both convenient and practical in use when the transmission device and said casing are mounted in the chassis of a tractor or 'other vehicle.

In the positions ofthe parts, as shown in the drawing, where the pinion 7 is in its medial position and not intermeshed with either of the bevel-gear wheels 3 and 4, the driving shaft 1, when rotated, simply rotates the shafts 10 and 18 but not the gearwheel 11. A pulley may be mounted upon the shaft 10 if desired. When the-shaft 18 and the pinion 7 are shifted in one direction to engage the teeth of the pinion with the teeth ofthe internal gear 5 on said wheel 3, rotation is communicated to said pinion and to the gear-wheel 11 and shaft 12 in one direction. When the shaft 18 and pinion 7 are shifted in an opposite direction sufficiently, the teeth of the pinion are similarly engaged with the teeth of the internal gear 6, which causes the said wheel 4 to impart reversed rotation to said pinion and to the gear wheel 11 and said shaft 12.

It will be observed that the gearing of this transmission device is very compactlSy arranged within the inclosing casing 14 and that said mechanism-is entirely coveredaI-id" protected from the action .of the elements and the intrusion v of dust e or othery sub-j;v stances. Since theshifting means .are opera-f1- tively applied to the collar 9without said casing, there is nothingy intruded from without into said casing which might occasion necessity for often )peni'ngthe casing.

Slight variations 1n the dimensions,vpro-V portions and details of the device may be made without'essentially departing from the scope and principles of the claims.

- Having describedA my invention, what I claim as new, and desire to secure by Letters Patent, is:v "i

, 1 4Ai power transmission device, compris# ing a casing having shaft-bearings, a driving bevel-piniom-a driving-shaft seated inl one of said bearings'on which said driving l bevel-pinion is mounted, like bevel-gear wheels '.intermeshing. with. teeth on opposite sides ofsaid pinion, said bevelwgear wheels having `c1utc .-elements on'v their opposed `faces and alined, central orifices', a rotatable shaft seated rotatalol and slidably in said orifices, a pinion fixe on'sa'id shaft' between v said bevel-gear wheels and slidable with said shafttobe intermeshed with the. teeth of either of the said clu-tch elementson said bevel-gearfwheels, means on the last-mentioned shaft without said casing adapted to shift it longitudinally 'to and fro, and a gear-wheel 'always in mesh mentioned pinion.

' 2. A power transmission devicekcompris ing a casingA having shaft bearings', 'a driving bevel-pinion, a driving-shaft seatedl in one of said bearings on which said driving bevel-pinion is 'mountedf like "bevel-gear' wheels intermeshing with teeth on opposite sides of said pinion, said bevel-gear wheels with the last having clutch-elements on `their opposed faces, yand allned central openings, a rotatable shaft seated rotatably and slidably in.

said openings, a pinion fixed on said shaft between said bevel-gear wheels and slidable` with said shaft to have the ends ofits teeth 'opies of this patent may be obtained for mesma -intermeshed respectively withbither 'of said pinion mounted onsaid driving-shaft, likemounted' axially in one` of the saidzbevelbevelgear wheels intermeshed with teeth on opposite ysides of said pinion, saidbevel-gear -wheels having clutch-elementsv on their opposed faces, and having alined central openings, a shaft extended into said casing and seated slidably and rotatably in the openings -of said bevel-gear wheels, means on the lastmentioned shaft without said casing adapt-` ed for use in shiftingr the shaft longitudinally, a spur-gear wheel ixedly mounted on the last-mentioned shaft between said bevel# l j gear wheels and having relatively wide teeth whose opposite ends may be respectively intermeshed with the adjacent clutch-elements of said bevel-gear wheels when, the lastmentioned l shaft is shifted appropriately, the last-mentioned pinion being idle when seated out of mesh with both said internal-gears, a

'rotary shaft ixedly axially mounted on one of said bevel-gear wheels to extend without said casing, a spur-gear wheel always interrotary shaft' fixedly axially mounted in the said spurgear wheel and extending outiof l said casing, and said casing having three vmeshed with the last-mentioned pinion, a

bearing lugs located onopposite sides thereof to provide a three-'point suspensione means therefor.

Signed at Waterloo, Iowa, this 6th day of Jan., 1915. A

THOMAS L. FAWICK. lVitnesses:

PEARL STANTON, G. C. KENNEDY.

five cents each,l bylaldi'essin'gi the Gcmrzmissioner of Patents, ytllashington, 10.9. f 

